Based on the cobweb theory and bee evolutionary genetic algorithm (BEGA), a multidimensional style intelligent design method is proposed to inherit the brand characteristics and obtain a multidimensional product style during the design process. Cobweb theory is used to characterise the multidimensional development of product genealogy, analyse the product morphological evolution mechanism of past generations, and distinguish morphological genes. The efficient inheritance of the BEGA guarantees the selection, crossover and mutation of genetic features. Based on the cobweb model of a certain brand of tractors, different morphological gene types were distinguished. With a human-computer evaluation, a constraint model that reflects the brand culture and consumer personality requirements was constructed. The BEGA was used to establish a multidimensional style intelligent design method for a certain brand. A tractor is used as an example to explain the process, and a set of experiments are used to verify the feasibility and effectiveness of the method.